Hi,
with some disappointment I found that P3D v4 multiplayer does not support multiple connections from the same public IP.
With previous versions it was certainly possible to have two different PCs connected to an external server on the same public IP.
The connection is possible but the one who enters last logs off the one who is already connected and often both get disconnected.
I have made some test using a VPN with the same result.
Can anyone confirm it?
/ SSW